Roller-jewel setter.



Patanted July 24, I900.

c. .1. ADAMS. ROLLER JEWEL SETTEBl (Application filed Apr. 23, 1900.)

(No Model.)

CHARLES J. ADAM S, OF MILTON, FLORIDA.

ROLLER-JEWEL ,SETT ER.

SPECIFICATION forming part of Letters Patent No. 654,124, dated July 24, 1900.

Application filed April 23, 1900. Serial No. 13,913. (No model.)

To all whom it may concern.

Be it known that 1, CHARLES J. ADAMS, a citizen of the United States, residing at Milton, in the county of Santa Rosa and State of Florida, have invented a new and useful Roller-Jewel Setter; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanyin g drawings, forming a part thereof.

The object of my invention is the provision of means adapted to receive and support the balance-wheel of a watch and at the same time expose the edge of the roller and roller- 1 jewel only, the other parts of the balance wheel being isolated and covered, so that when the roller-jewel is being set the heat employed will not come in contact with and injure the balance-staff and hair-spring or other parts of the wheel.

With this end in view my invention consists in a tool comprising two arms, one of said arms being provided with a slotted plate and the other with two branches, one of them having a cylindrical hollow cap and the other adapted to bear upon the end of a roller-j ewe while the same is being set. 4

It further consists in certain noveltiesof construction and combinations of parts hereinafter described, and pointe (1 out in the claims.

The accompanying drawings illustrate an example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the application of the principle.

Figure 1 is a View in perspective showing the tool with the balance-wheel adj usted thereto, the roller-jewel and edge of the roller only being exposed and the parts being in the relative positions they occupy preparatory to the act of permanently setting the jewel. Fig. 2 is an enlarged plan View of the under side of the tool shown in Fig. 1. Fig. 3 is a section taken on line a: m of Fig. 1.

Referring to the several figures, the letter Adesignates the bottom arm of the tool, which is preferably made of spring metal; B, the

' top arm, also of spring metal; 0, the united ends of the arms forming a handle; D, a plate at the free end of the bottom arm; E, a narrow open slot in the plate, and F a flange turned so as to lie in a plane at a right angle to the plane of the plate.

G is a slit in the upper arm dividing the same into two branches; H,one of the branches slightly sprung downwardly from the plane of the upper arm; I, the other branch of the arm, and J a hollow cap secured to the end of the branch I and upon the under side thereof.

K is a balance-wheel; L, an ordinary hairspring; M, the balance-staff; N, a roller or circularcollet, and O the roller-jewel or rubypm.

In using the tool the arbor or balance-staff between the roller and wheel is adjusted in the slot E so that the wheel and hair-spring will occupy a position below the plate and the roller be in contact with the top surface, the freeend of the staff projecting upwardly within the hollow cap J and the edge of the roller and the roller-jewel lying outside the cap in an exposed position, as shown in Fig. 1. The spring branch H of the upper arm will bear downwardly upon the end of the jewel and hold it in its proper position. Gum-shellac can now be applied to the joint formed by the union of the roller and roller-jewel and melted by means of a flame and blowpipe.

From the foregoing it will be obvious that I have produced means in the form of a tool which fulfils all the conditions set forth as the object or end of my invention.

The edge of the roller and roller-jewel only are exposed. The balance-staff is protected by the cap, and the Wheel and hair-spring are isolated from the flame by means of the plate.

In ordinary practice when setting the rollerjewel the roller must be removed from the balance-staff. The use of my invention obviates this necessity, and consequently effects a great saving of time and labor.

While I have illustrated and specifically described only one example of the physical embodiment of myinvention, I do not thereby intend to limit the scope thereof to the exact details of construction, inasmuch as i'n its manufacture colorable changes may beintroduced without constituting a substantial departure.

IVhat I claim as new, and desire to secure by Letters Patent, is-- 1. A roller-jewel setter comprising an up per arm and a lower arm; said upper arm having at its free end a hollow cap; and said lower arm having a slotted plate; in substance as set forth.

2. A roller-jewel setter comprising an upper arm and a lower arm; said upper arm having two branches, one of them being of spring metal and the other provided with a hollow cap; and the lower arm havingaslotted plate; in substance as set forth.

3. A roller-jewel setter having two arms; one of the said arms provided with a slotted plate, and the other arm having means for inclosing the projecting end of the balancestaff and covering the top surface of the roller,

with the exceptionof that part occupied by 

